In regular copy, provide drag/drop priority for files/folders.

A graphical interface that shows the folder/file hierarchy where you could put the files that are most important first in the list, then let the rest copy whenever. When trying to backup files on a 2Tb disk, I could care less about some of the files but some are critical. I'd like to be able to mark the critical folders/files by dragging them to the top of the list. Thanks for listening.